Danny Giannella and Tammer Hijazi of the Williamsburg-based design duo Bower met as woodworkers at Uhuru’s Brooklyn studio, but struck out on their own in 2014 with a line of impeccably styled objects and furnishings that grows more ambitious each year. For Sight Unseen, they took their already delightful Tipsy — an impossible-to-knock-over, cone-shaped paperweight made from brass and wood — and gave it the Jackson Pollock treatment.